If you have not already, avoid downloading the archive to prevent potential malware infection.
The primary use of this data is to automate login attempts on other services (banking, social media, e-commerce) where users might have reused the passwords found in the list. 660 mega.nz by muchospasswords.7z
Archives like .7z or .zip found on public sharing sites under "password list" names are frequently "trojanized." They may contain infostealers or ransomware disguised as text files to infect the person attempting to download the list. If you have not already, avoid downloading the
Downloading or distributing such files may be illegal depending on local jurisdictions, as it involves handling stolen personal information. Recommended Actions Downloading or distributing such files may be illegal
Based on the name, it likely contains plain-text credentials (email:password format) used by malicious actors for Account Takeover (ATO) attacks.
If you are concerned your credentials are in this or similar lists, use services like Have I Been Pwned to check your email address against known breaches.